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On Mon, 28 Jun 2010 15:12:23 -0700, Bill Bumgarner <email@hidden> said: >This document does demonstrate declaring a return type, but only in the context of a typedef or block variable declaration (and not for a block literal): > >http://developer.apple.com/iphone/library/documentation/Cocoa/Conceptual/Blocks /Articles/bxDeclaringCreating.html Correct, and that's the problem I'm talking about. There are no examples on that page of "^ ReturnType". >The "Using Blocks" also shows declaring a return type, but only on the type definition and not on a block literal. Correct. There are no examples on that page of "^ ReturnType". Indeed, the example in "Using a Block as a Method Argument" apparently cheats by declaring the block's type as a separate step, totally unnecessarily (since the type is already defined by the declaration of indexesOfObjectsPassingTest). It's almost as if the author of the example didn't understand the syntax either. >Many of the examples in "A Short Practical Guide To Blocks" also show declaring a block with an explicit return type: > >http://developer.apple.com/iphone/library/featuredarticles/Short_Practical_Guid e_Blocks/ And not a one of them shows "^ ReturnType". It isn't even mentioned as being possible, or possibly needed; au contraire, it comes right out and says "When specifying your block, begin with a caret (^) and the parenthesized argument list", skipping merrily past the return type and indeed apparently telling you NOT to use one. >I've filed <rdar://problem/8138925> asking for the documentation to treat the block literal syntax in detail Thanks a bunch for filing that. On an important technical matter like this, the failure to just state the bald rules of the syntax is a positive disservice. m. -- matt neuburg, phd = email@hidden, <http://www.tidbits.com/matt/> A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.tidbits.com/matt/default.html#applescriptthings _______________________________________________ Cocoa-dev mailing list (email@hidden) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
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